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Bridglalsingh S, Archer-Hartmann S, Azadi P, Barbier de La Serre C, Remillard RL, Sunvold GD, Bartges JW. Association of four differently processed diets with plasma and urine advanced glycation end products and serum soluble receptor for advanced glycation end products concentration in healthy dogs. J Anim Physiol Anim Nutr (Berl) 2024; 108:735-751. [PMID: 38279966 DOI: 10.1111/jpn.13927] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Revised: 12/12/2023] [Accepted: 01/06/2024] [Indexed: 01/29/2024]
Abstract
Advanced glycation end products (AGEs), formed via the Maillard reaction (MR) during processing of foods, have been implicated in inflammatory and degenerative diseases in human beings. Cellular damage is primarily caused by AGE binding with the receptor for AGEs (RAGE) on cell membranes. An isoform of RAGE, soluble RAGE (sRAGE), acts as a decoy receptor binding circulating AGEs preventing cellular activation. Pet food manufacturing involves processing methods similar to human food processing that may increase dietary AGEs (dAGEs). We hypothesized that diet, plasma and urine AGEs, and serum sRAGE concentrations would differ between thermally processed diets. This study examined the association of four differently processed diets: ultra-processed canned wet food (WF); ultra-processed dry food (DF); moderately processed air-dried food (ADF) and minimally processed mildly cooked food (MF) on total plasma levels of the AGEs, carboxymethyllysine (CML), carboxyethyllysine (CEL), methylglyoxal hydroimidazolone-1, glyoxal hydroimidazolone-1, argpyrimidine, urine CML, CEL and lysinoalanine, and serum sRAGE concentration. Ultra-high-performance liquid chromatography-tandem mass spectrometry was used to measure AGEs. sRAGE concentration was measured using a commercial canine-specific enzyme-linked immunosorbent assay kit. Total dAGEs (mg/100 kcal as fed) were higher in WF than in other diets. Plasma total AGEs (nM/50 μL) were significantly higher with WF, with no difference found between DF, ADF, and MF; however, ADF was significantly higher than MF. Urine CML (nmol AGEs/mmol creatinine) was significantly higher with DF than with WF and MF. There were no significant differences in total urine AGEs or serum sRAGE concentration between diets. In conclusion, different methods of processing pet foods are associated with varied quantities of AGEs influencing total plasma AGE concentration in healthy dogs. Serum sRAGE concentration did not vary across diets but differences in total AGE/sRAGE ratio were observed between MF and WF and, ADF and DF.
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Affiliation(s)
- Siobhan Bridglalsingh
- Department of Small Animal Medicine and Surgery, University of Georgia, Athens, Georgia, USA
| | - Stephanie Archer-Hartmann
- Analytical Services, Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | - Parastoo Azadi
- Analytical Services, Complex Carbohydrate Research Center, University of Georgia, Athens, Georgia, USA
| | | | | | | | - Joseph W Bartges
- Department of Small Animal Medicine and Surgery, University of Georgia, Athens, Georgia, USA
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2
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Demirer B, Fisunoğlu M. Evaluation of the effects of dietary advanced glycation end products on inflammation. NUTR BULL 2024; 49:6-18. [PMID: 38114851 DOI: 10.1111/nbu.12653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 11/16/2023] [Accepted: 11/20/2023] [Indexed: 12/21/2023]
Abstract
Advanced glycation end products (AGEs) are a large number of heterogeneous compounds formed by the glycation of proteins, fats or nucleic acids. Endogenous AGEs have been associated with various health problems such as obesity, type 2 diabetes mellitus and cardiovascular disease. Inflammation is thought to be one of the main mechanisms in the development of these disorders. Although AGEs are produced endogenously in the body, exogenous sources such as smoking and diet also contribute to the body pool. Therefore, when the AGE pool in the body rises above physiological levels, different pathological conditions may occur through various mechanisms, especially inflammation. While the effects of endogenous AGEs on the development of inflammation have been studied relatively extensively, and current evidence indicates that dietary AGEs (dAGEs) contribute to the body's AGE pool, it is not yet known whether dAGEs have the same effect on the development of inflammation as endogenous AGEs. Therefore, this review aimed to evaluate the results of cross-sectional and intervention studies to understand whether dAGEs are associated with inflammation and, if there is an effect on inflammation, through which mechanisms this effect might occur.
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Affiliation(s)
- Büşra Demirer
- Nutrition and Dietetics, Karabuk University, Karabuk, Turkey
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Abstract
Endogenous photosensitizers play a critical role in both beneficial and harmful light-induced transformations in biological systems. Understanding their mode of action is essential for advancing fields such as photomedicine, photoredox catalysis, environmental science, and the development of sun care products. This review offers a comprehensive analysis of endogenous photosensitizers in human skin, investigating the connections between their electronic excitation and the subsequent activation or damage of organic biomolecules. We gather the physicochemical and photochemical properties of key endogenous photosensitizers and examine the relationships between their chemical reactivity, location within the skin, and the primary biochemical events following solar radiation exposure, along with their influence on skin physiology and pathology. An important take-home message of this review is that photosensitization allows visible light and UV-A radiation to have large effects on skin. The analysis presented here unveils potential causes for the continuous increase in global skin cancer cases and emphasizes the limitations of current sun protection approaches.
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Affiliation(s)
- Erick L Bastos
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, 05508-000 São Paulo, São Paulo, Brazil
| | - Frank H Quina
- Department of Fundamental Chemistry, Institute of Chemistry, University of São Paulo, 05508-000 São Paulo, São Paulo, Brazil
- Department of Chemical Engineering, Polytechnic School, University of São Paulo, 05508-000 São Paulo, São Paulo, Brazil
| | - Maurício S Baptista
- Department of Biochemistry, Institute of Chemistry, University of São Paulo, 05508-000 São Paulo, São Paulo, Brazil
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Köhler ZM, Szepesi Á. More Than a Diamine Oxidase Inhibitor: L-Aminoguanidine Modulates Polyamine-Related Abiotic Stress Responses of Plants. Life (Basel) 2023; 13:life13030747. [PMID: 36983901 PMCID: PMC10052680 DOI: 10.3390/life13030747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 03/06/2023] [Accepted: 03/07/2023] [Indexed: 03/12/2023] Open
Abstract
L-aminoguanidine (AG) is an inhibitor frequently used for investigating plant abiotic stress responses; however, its exact mode of action is not well understood. Many studies used this compound as a specific diamine oxidase inhibitor, whereas other studies used it for reducing nitric oxide (NO) production. Recent studies suggest its antiglycation effect; however, this remains elusive in plants. This review summarises our current knowledge about different targets of AG in plants. Our recommendation is to use AG as a modulator of polyamine-related mechanisms rather than a specific inhibitor. In the future overall investigation is needed to decipher the exact mechanisms of AG. More careful application of AG could give more insight into plant abiotic stress responses.
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Affiliation(s)
- Zoltán Márton Köhler
- Department of Biochemistry, Albert Szent-Gyorgyi Medical School, University of Szeged, H-6720 Szeged, Hungary
- Correspondence:
| | - Ágnes Szepesi
- Department of Plant Biology, Institute of Biology, Faculty of Science and Informatics, University of Szeged, Közép fasor 52, H-6726 Szeged, Hungary
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Comparison of pharmacokinetics, biodistribution, and excretion of free and bound Nε-carboxymethyllysine in rats by HPLC-MS/MS. Food Res Int 2023; 164:112395. [PMID: 36737978 DOI: 10.1016/j.foodres.2022.112395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 12/10/2022] [Accepted: 12/24/2022] [Indexed: 12/29/2022]
Abstract
As a representative product of advanced glycation end products, Nɛ-carboxymethyllysine (CML) exists in free and bound forms in vivo and in food with different bioavailability. To thoroughly understand the bioavailability of free Nɛ-carboxymethyllysine (CML) and bovine serum albumin (BSA)-CML in vivo after intragastric administration, pharmacokinetics, biodistribution, and excretion of CML in rats were investigated by high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). Pharmacokinetics results revealed that free CML peaked at 1.83 h (1684.72 ± 78.08 ng/mL) and 1.33 h (1440.84 ± 72.48 ng/mL) in serum after intragastric administration of free CML and BSA-CML, demonstrating the higher absorption of free CML than BSA-CML. Besides, dietary free CML exhibited a relatively lower body clearance and tissue distribution than dietary BSA-CML based on the apparent volume of distribution and body clearance. Moreover, free CML was concentrated in the kidneys, indicating that kidneys were the target organ for the uptake of absorbed free CML. Additionally, the total excretion rate of CML in urine and feces were 37% and 60% after oral administration of free CML and BSA-CML. These results shed pivotal light on a better understanding of the biological effects of free and bound CML on health.
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Yuan X, Bai Y, Zhang J, Zhai R, Nie C, Tu A, Li S, Chen Z, Zhang M, Li J. Comparison of tissue distribution of free and protein bound Nɛ-carboxymethyllysine after long-term oral administration to mice. Food Res Int 2022; 161:111787. [DOI: 10.1016/j.foodres.2022.111787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Revised: 07/03/2022] [Accepted: 08/18/2022] [Indexed: 11/26/2022]
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Yuan X, Nie C, Liu H, Ma Q, Peng B, Zhang M, Chen Z, Li J. Comparison of metabolic fate, target organs, and microbiota interactions of free and bound dietary advanced glycation end products. Crit Rev Food Sci Nutr 2021:1-22. [PMID: 34698575 DOI: 10.1080/10408398.2021.1991265] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Increased intake of Western diets and ultra-processed foods is accompanied by increased intake of advanced glycation end products (AGEs). AGEs can be generated exogenously in the thermal processing of food and endogenously in the human body, which associated with various chronic diseases. In food, AGEs can be divided into free and bound forms, which differ in their bioavailability, digestion, absorption, gut microbial interactions and untargeted metabolites. We summarized the measurements and contents of free and bound AGE in foods. Moreover, the ingestion, digestion, absorption, excretion, gut microbiota interactions, and metabolites and metabolic pathways between free and bound AGEs based on animal and human studies were compared. Bound AGEs were predominant in most of the selected foods, while beer and soy sauce were rich in free AGEs. Only 10%-30% of AGEs were absorbed into the systemic circulation when orally administered. The excretion of ingested free and bound AGEs was approximately 90% and 60%, respectively. Dietary free CML has a detrimental effect on gut microbiota composition, while bound AGEs have both detrimental and beneficial impacts. Free and bound dietary AGEs changed amino acid metabolism, energy metabolism and carbohydrate metabolism. And besides, bound dietary AGEs altered vitamin metabolism, and glycerolipid metabolism.
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Affiliation(s)
- Xiaojin Yuan
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Chenxi Nie
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Huicui Liu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Qingyu Ma
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Bo Peng
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Min Zhang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Zhifei Chen
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Juxiu Li
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
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Komura T, Yamanaka M, Nishimura K, Hara K, Nishikawa Y. Autofluorescence as a noninvasive biomarker of senescence and advanced glycation end products in Caenorhabditis elegans. NPJ Aging Mech Dis 2021; 7:12. [PMID: 34099724 PMCID: PMC8184826 DOI: 10.1038/s41514-021-00061-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 02/17/2021] [Indexed: 12/18/2022] Open
Abstract
To assess the utility of autofluorescence as a noninvasive biomarker of senescence in Caenorhabditis elegans, we measured the autofluorescence of individual nematodes using spectrofluorometry. The fluorescence of each worm increased with age. Animals with lower fluorescence intensity exhibited longer life expectancy. When proteins extracted from worms were incubated with sugars, the fluorescence intensity and the concentration of advanced glycation end products (AGEs) increased over time. Ribose enhanced these changes not only in vitro but also in vivo. The glycation blocker rifampicin suppressed this rise in fluorescence. High-resolution mass spectrometry revealed that vitellogenins accumulated in old worms, and glycated vitellogenins emitted six-fold higher fluorescence than naive vitellogenins. The increase in fluorescence with ageing originates from glycated substances, and therefore could serve as a useful noninvasive biomarker of AGEs. C. elegans can serve as a new model to look for anti-AGE factors and to study the relationship between AGEs and senescence.
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Affiliation(s)
- Tomomi Komura
- Faculty of Human Life and Environment, Nara Women's University, Nara, Japan
- Graduate School of Human Life Science, Osaka City University, Osaka, Japan
| | - Mikihiro Yamanaka
- Department of Bioscience, School of Agriculture, Tokai University, Kumamoto, Japan
| | - Kohji Nishimura
- Department of Molecular and Functional Genomics, Interdisciplinary Center for Science Research, Organization of Research, Shimane University, Shimane, Japan
- Faculty of Life and Environmental Science, Shimane University, Shimane, Japan
| | | | - Yoshikazu Nishikawa
- Graduate School of Human Life Science, Osaka City University, Osaka, Japan.
- Faculty of Human Sciences, Tezukayamagakuin University, Osaka, Japan.
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Francisco FA, Saavedra LPJ, Junior MDF, Barra C, Matafome P, Mathias PCF, Gomes RM. Early AGEing and metabolic diseases: is perinatal exposure to glycotoxins programming for adult-life metabolic syndrome? Nutr Rev 2021; 79:13-24. [PMID: 32951053 DOI: 10.1093/nutrit/nuaa074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Perinatal early nutritional disorders are critical for the developmental origins of health and disease. Glycotoxins, or advanced glycation end-products, and their precursors such as the methylglyoxal, which are formed endogenously and commonly found in processed foods and infant formulas, may be associated with acute and long-term metabolic disorders. Besides general aspects of glycotoxins, such as their endogenous production, exogenous sources, and their role in the development of metabolic syndrome, we discuss in this review the sources of perinatal exposure to glycotoxins and their involvement in metabolic programming mechanisms. The role of perinatal glycotoxin exposure in the onset of insulin resistance, central nervous system development, cardiovascular diseases, and early aging also are discussed, as are possible interventions that may prevent or reduce such effects.
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Affiliation(s)
- Flávio A Francisco
- Department of Biotechnology, Genetics, and Cellular Biology, State University of Maringa, Maringa, PR, Brazil
| | - Lucas P J Saavedra
- Department of Biotechnology, Genetics, and Cellular Biology, State University of Maringa, Maringa, PR, Brazil
| | - Marcos D F Junior
- Department of Physiological Sciences, Federal University of Goiás, Goiânia, GO, Brazil
| | - Cátia Barra
- Institute of Physiology and Coimbra Institute of Clinical and Biomedical Research, Faculty of Medicine, and the Center for Innovative Biotechnology and Biomedicine, University of Coimbra; and the Clinical Academic Center of Coimbra, Coimbra, Portugal
| | - Paulo Matafome
- Institute of Physiology and Coimbra Institute of Clinical and Biomedical Research, Faculty of Medicine, and the Center for Innovative Biotechnology and Biomedicine, University of Coimbra; and the Clinical Academic Center of Coimbra, Coimbra, Portugal
| | - Paulo C F Mathias
- Department of Biotechnology, Genetics, and Cellular Biology, State University of Maringa, Maringa, PR, Brazil
| | - Rodrigo M Gomes
- Department of Physiological Sciences, Federal University of Goiás, Goiânia, GO, Brazil
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10
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Kovalčíková AG, Tichá Ľ, Šebeková K, Celec P, Čagalová A, Sogutlu F, Podracká Ľ. Oxidative status in plasma, urine and saliva of girls with anorexia nervosa and healthy controls: a cross-sectional study. J Eat Disord 2021; 9:54. [PMID: 33883041 PMCID: PMC8059320 DOI: 10.1186/s40337-021-00408-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 04/07/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Anorexia nervosa (AN) is a serious psychosomatic disorder with unclear pathomechanisms. Metabolic dysregulation is associated with disruption of redox homeostasis that might play a pivotal role in the development of AN. The aim of our study was to assess oxidative status and carbonyl stress in plasma, urine and saliva of patients with AN and healthy controls. METHODS Plasma, spot urine, and saliva were collected from 111 girls with AN (aged from 10 to 18 years) and from 29 age-matched controls. Markers of oxidative stress and antioxidant status were measured using spectrophotometric and fluorometric methods. RESULTS Plasma advanced oxidation protein products (AOPP) and advanced glycation end products (AGEs) were significantly higher in patients with AN than in healthy controls (by 96, and 82%, respectively). Accordingly, urinary concentrations of AOPP and fructosamines and salivary concentrations of AGEs were higher in girls with AN compared with controls (by 250, and 41% in urine; by 92% in saliva, respectively). Concentrations of thiobarbituric acid reactive substances (TBARS) in saliva were 3-times higher in the patients with AN than in the controls. Overall antioxidants were lower in plasma of girls with AN compared to the controls, as shown by total antioxidant capacity and ratio of reduced and oxidized glutathione (by 43, and 31%, respectively). CONCLUSIONS This is the first study assessing wide range of markers of oxidative status in plasma, urine and saliva of the patients with AN. We showed that both, higher levels of markers of oxidative stress and lower antioxidants play a role in redox disruption. Restoration of redox homeostasis might be of the clinical relevance.
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Affiliation(s)
- Alexandra Gaál Kovalčíková
- Department of Paediatrics, The National Institute of Children's Diseases and Faculty of Medicine, Comenius University, Limbová 1, 83340, Bratislava, Slovakia.
| | - Ľubica Tichá
- Department of Paediatrics, The National Institute of Children's Diseases and Faculty of Medicine, Comenius University, Limbová 1, 83340, Bratislava, Slovakia
| | - Katarína Šebeková
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Peter Celec
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia.,Institute of Pathophysiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia.,Department of Molecular Biology, Faculty of Natural Sciences, Comenius University, Bratislava, Slovakia
| | - Alžbeta Čagalová
- Department of Paediatrics, The National Institute of Children's Diseases and Faculty of Medicine, Comenius University, Limbová 1, 83340, Bratislava, Slovakia
| | - Fatma Sogutlu
- Department of Medical Biology, Faculty of Medicine, Ege University, Bornova, Izmir, Turkey
| | - Ľudmila Podracká
- Department of Paediatrics, The National Institute of Children's Diseases and Faculty of Medicine, Comenius University, Limbová 1, 83340, Bratislava, Slovakia
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Takeuchi M. Toxic AGEs (TAGE) theory: a new concept for preventing the development of diseases related to lifestyle. Diabetol Metab Syndr 2020; 12:105. [PMID: 33292465 PMCID: PMC7708159 DOI: 10.1186/s13098-020-00614-3] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Accepted: 11/19/2020] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND The habitual excessive intake of sugar (i.e., sucrose and high-fructose corn syrup), which has been implicated in the onset of diabetes mellitus, induces excessive production of glyceraldehyde, a metabolite produced during glucose and fructose metabolism, in hepatocytes, neuronal cells, and cardiomyocytes. MAIN TEXT Toxic advanced glycation end-products (toxic AGEs, TAGE) are formed from reactions between glyceraldehyde and intracellular proteins, and their accumulation contributes to various cellular disorders. TAGE leakage from cells affects the surrounding cells and increases serum TAGE levels, promoting the onset and/or development of lifestyle-related diseases (LSRD). Therefore, serum TAGE levels have potential as a novel biomarker for predicting the onset and/or progression of LSRD, and minimizing the effects of TAGE might help to prevent the onset and/or progression of LSRD. Serum TAGE levels are closely related to LSRD associated with the excessive ingestion of sugar and/or dietary AGEs. CONCLUSIONS The TAGE theory is also expected to open new perspectives for research into numerous other diseases.
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Affiliation(s)
- Masayoshi Takeuchi
- Department of Advanced Medicine, Medical Research Institute, Kanazawa Medical University, Uchinada-machi, Ishikawa, 920-0293, Japan.
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12
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de Aquino RDC, Previdelli ÁN, de Oliveira Pedron ÉL, Machado-Lima A. Dietary Patterns, Diabetes, and Aging. CURRENT GERIATRICS REPORTS 2020. [DOI: 10.1007/s13670-020-00335-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Healthy eating recommendations: good for reducing dietary contribution to the body's advanced glycation/lipoxidation end products pool? Nutr Res Rev 2020; 34:48-63. [PMID: 32450931 DOI: 10.1017/s0954422420000141] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The present review aims to give dietary recommendations to reduce the occurrence of the Maillard reaction in foods and in vivo to reduce the body's advanced glycation/lipoxidation end products (AGE/ALE) pool. A healthy diet, food reformulation and good culinary practices may be feasible for achieving the goal. A varied diet rich in fresh vegetables and fruits, non-added sugar beverages containing inhibitors of the Maillard reaction, and foods prepared by steaming and poaching as culinary techniques is recommended. Intake of supplements and novel foods with low sugars, low fats, enriched in bioactive compounds from food and waste able to modulate carbohydrate metabolism and reduce body's AGE/ALE pool is also recommended. In conclusion, the recommendations made for healthy eating by the Spanish Society of Community Nutrition (SENC) and Harvard University seem to be adequate to reduce dietary AGE/ALE, the body's AGE/ALE pool and to achieve sustainable nutrition and health.
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Schöneich C. Photo-Degradation of Therapeutic Proteins: Mechanistic Aspects. Pharm Res 2020; 37:45. [DOI: 10.1007/s11095-020-2763-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 01/15/2020] [Indexed: 12/11/2022]
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JANŠÁKOVÁ K, LENGYELOVÁ E, PRIBULOVÁ N, SOMOZA V, CELEC P, ŠEBEKOVÁ K, OSTATNÍKOVÁ D, TÓTHOVÁ Ľ. Metabolic and Renal Effects of Dietary Advanced Glycation end Products in Pregnant Rats – A Pilot Study. Physiol Res 2019; 68:467-479. [DOI: 10.33549/physiolres.934102] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Thermally processed food contains advanced glycation end products (AGEs) including N-(carboxymethyl)lysine (CML). Higher AGEs or circulating CML were shown to be associated with pregnancy complications such as preeclampsia and gestational diabetes. It is unclear whether this association is causal. The aim of our study was to analyze the effects of dietary CML and CML-containing thermally processed food on metabolism in pregnant rats. Animals were fed with standard or with AGE-rich diet from gestation day 1. Third group received standard diet and CML via gavage. On gestation day 18, blood pressure was measured, urine and blood were collected and the oral glucose tolerance test was performed. Plasma AGEs were slightly higher in pregnant rats fed with the AGE-rich diet (p=0.09). A non-significant trend towards higher CML in plasma was found in the CML group (p=0.06). No significant differences between groups were revealed in glucose metabolism or markers of renal functions like proteinuria and creatinine clearance. In conclusion, this study does not support the hypothesis that dietary AGEs such as CML might induce harmful metabolic changes or contribute to the pathogenesis of pregnancy complications. The short duration of the rodent gestation warrants further studies analyzing long-term effects of AGEs/CML in preconception nutrition.
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Affiliation(s)
- K. JANŠÁKOVÁ
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - E. LENGYELOVÁ
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia,
| | - N. PRIBULOVÁ
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - V. SOMOZA
- Department of Nutritional and Physiological Chemistry, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - P. CELEC
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - K. ŠEBEKOVÁ
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - D. OSTATNÍKOVÁ
- Institute of Physiology, Faculty of Medicine, Comenius University, Bratislava, Slovakia
| | - Ľ. TÓTHOVÁ
- Institute of Molecular Biomedicine, Faculty of Medicine, Comenius University, Bratislava, Slovakia
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